<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>轮播图管理</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 搜索筛选 -->
    <el-form :inline="true" class="user-search">
      <el-form-item>
        <el-button size="small" type="primary" icon="el-icon-search" @click="selectSlideshow()">查询</el-button>
      </el-form-item>
      <el-form-item label="">
        <el-button size="small" type="primary" icon="el-icon-plus" @click="handleEdit()">添加</el-button>
      </el-form-item>
    </el-form>
    <!--列表-->
    <el-table size="small" :data="listData" highlight-current-row v-loading="loading" border
      element-loading-text="拼命加载中" style="width: 100%;">

      <el-table-column align="center" type="index" width="60" label="序号">
      </el-table-column>

      <el-table-column prop="image" label="主图" width="120">
        <template slot-scope="scope">
          <img style="width: 90px;height: 90px;" :src="scope.row.image">
        </template>
      </el-table-column>
      <el-table-column prop="indexId" label="轮播图类型" width="120">
        <template slot-scope="scope">
          <el-button size="mini" type="primary">
            {{ typeName(scope.row.indexId) }}
          </el-button>
        </template>
      </el-table-column>
      <el-table-column prop="url" label="轮播图跳转地址" width="300">

      </el-table-column>
      <el-table-column prop="type" label="上传位置" width="120">
        <template slot-scope="scope">
          <el-button size="mini" type="primary">{{ typeName1(scope.row.type) }}</el-button>
        </template>
      </el-table-column>
      <el-table-column align="center" label="操作" min-width="300">
        <template slot-scope="scope">
          <el-button size="mini" @click="handleEdit(scope.$index, scope.row)">编辑</el-button>
          <el-button size="mini" type="danger" @click="deleteSlideshow(scope.$index, scope.row)">删除</el-button>
        </template>
      </el-table-column>
    </el-table>
    <!-- 分页组件 -->

    <!-- 编辑界面 -->
    <el-dialog :title="title" :visible.sync="editFormVisible" width="50%" @click="closeDialog">
      <el-form label-width="120px" ref="editForm">
        <el-form-item label="轮播图类型">
          <el-select :multiple="false" v-model="formData.indexId" placeholder="请选择轮播图类型">
            <el-option v-for="item in indexLst" :key="item.name" :label="item.name" :value="item.id">
            </el-option>
          </el-select>
        </el-form-item>
        <el-form-item label="上传位置">
          <el-select :multiple="false" v-model="formData.type" placeholder="请选择上传位置">
            <el-option v-for="item in typeLst" :key="item.name" :label="item.name" :value="item.id">
            </el-option>
          </el-select>
        </el-form-item>
        <el-form-item label="主图" style="">
          <div class="upload-demo">
            <el-upload action="" :http-request="mainImgUpload" :show-file-list="false" list-type="picture-card">
              <i class="el-icon-plus"></i>
            </el-upload>
            <div style="position:relative;margin-left: 24px;" v-if="formData.image">
              <img :src="formData.image" class="avatar" />

              <div class="deleUrl">
                <el-button type="danger" icon="el-icon-delete" circle @click="delImageClick()">
                </el-button>
              </div>
            </div>
          </div>
        </el-form-item>
        <el-form-item label="轮播图跳转地址">
          <el-input size="small" v-model="formData.url" type="text" placeholder="请输入轮播图跳转地址"></el-input>
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button size="small" @click="closeDialog">取消</el-button>
        <el-button size="small" type="primary" :loading="loading" class="title" @click="addSlideshow()"
          v-if="title == '添加'">添加</el-button>
        <el-button size="small" type="primary" :loading="loading" class="title" @click="upSlideshow()"
          v-if="title == '修改'">修改</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
import {
  selectCarouselAlls, addCarousels, selectCarouselByIndexIds, UpdateCarouselByIds, DeleteCarouselByIds
} from "../../api/userMG";
import Pagination from "../../components/Pagination";
import client from "@/utils/ossClient.js";
export default {
  data() {
    return {
      loading: false, //是显示加载
      editFormVisible: false, //控制编辑页面显示与隐藏
      title: "添加",
      listData: [], //
      // 分页参数
      pageparm: {
        currentPage: 1,
        pageSize: 20,
        total: 10,
      },
      indexLst: [
        {
          name: '首页',
          id: 0,
        },
        {
          name: '热报课程',
          id: -1,
        },
        {
          name: '师资团队',
          id: -2,
        },
        {
          name: '学习咨询',
          id: -3,
        },
      ],
      formData: {
        image: "",
        indexId: '',
        type: '',
        url: '',
      },
      typeLst: [
        {
          name: 'pc端',
          id: 1,
        },
        {
          name: '移动端',
          id: 2,
        }
      ]
    };
  },
  // 注册组件
  components: {
    Pagination,
  },
  /**
   * 数据发生改变
   */

  /**
   * 创建完毕
   */
  created() {
    this.selectSlideshow()
  },
  computed: {
    typeName() {
      return typeId => {
        let name = ''
        this.indexLst.forEach(item => {
          if (item.id == typeId) {
            name = item.name
          }
        })
        return name
      }
    },
    typeName1() {
      return type => {
        let name = ''
        this.typeLst.forEach(item => {
          if (item.id == Number(type)) {
            name = item.name

          }
        })
        return name
      }
    }
  },
  /**
   * 里面的方法只有被调用才会执行
   */
  methods: {
    // 删除
    deleteSlideshow(index, row) {
      this.$confirm("确定要删除吗?", "信息", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning",
      })
        .then(() => {
          DeleteCarouselByIds({ id: row.id })
            .then((res) => {
              if (res.code == 200) {
                this.$message({
                  type: "success",
                  message: "已删除！",
                });
                this.selectSlideshow();
              } else {
                this.$message({
                  type: "info",
                  message: res.msg,
                });
              }
            })
            .catch((err) => {
              this.loading = false;
              this.$message.error("删除失败，请稍后再试！");
            });
        })
        .catch(() => {
          this.$message({
            type: "info",
            message: "已取消删除",
          });
        });
    },

    //修改轮播图
    upSlideshow() {

      this.loading = true;
      var formData = JSON.parse(JSON.stringify(this.formData));

      UpdateCarouselByIds(formData).then((res) => {
        this.loading = false;
        if (res.code == 200) {
          this.editFormVisible = false
          this.$message({
            type: "success",
            message: res.msg,
          });
          this.selectSlideshow();
        } else {
          this.$message.error(res.msg);
        }
      });
    },

    //添加轮播图
    addSlideshow() {
      this.loading = true;
      this.formData.type = 0;
      var formData = JSON.parse(JSON.stringify(this.formData))
      addCarousels(this.formData).then((res) => {
        this.loading = false;
        if (res.code == 200) {
          this.editFormVisible = false
          this.$message({
            type: "success",
            message: res.msg,
          });
          this.selectSlideshow();
        } else {
          this.$message.error(res.msg);
        }
      });
    },

    //自定义上传方法..
    mainImgUpload(file) {
      //判断扩展名
      const tmpcnt = file.file.name.lastIndexOf(".");
      const exname = file.file.name.substring(tmpcnt + 1);
      const names = ["jpg", "jpeg", "webp", "png", "bmp"];
      if (names.indexOf(exname) < 0) {
        this.$message.error("不支持的格式!");
        return;
      }
      const fileName = file.file.uid + "." + exname;
      client
        .put(fileName, file.file)
        .then((res) => {
          if (res.url) {
            this.formData.image = res.url;
          } else {
            this.$message.error("文件上传失败");
          }
        })
        .catch((err) => { });
    },


    // 获取轮播图
    selectSlideshow() {
      this.loading = true;
      selectCarouselByIndexIds({
        indexId: 0,
      }).then((res) => {
        this.loading = false;
        if (res.code == 200) {
          this.listData = res.data.data;
          console.log('this.listData', this.listData)
          return;
        }
        this.$message({
          type: "info",
          message: res.msg,
        });
      });
    },
    delImageClick() {
      this.formData.image = ''
    },
    // 分页插件事件
    callFather(parm) {
      this.getDishesList(parm.currentPage);
    },

    //显示编辑界面
    handleEdit: function (index, row) {
      this.editFormVisible = true;
      console.log('row.type', row);
      if (row != undefined && row != "undefined") {
        this.title = "修改";
        this.formData.id = row.id;
        this.formData.image = row.image;
        this.formData.type = Number(row.type);
        this.formData.indexId = row.indexId;
        this.formData.url = row.url;
      } else {
        this.title = "添加";
        this.formData.id = "";
        this.formData.indexId = "";
        this.formData.type = "";
        this.formData.image = "";
        this.formData.url = "";

      }
    },
    // 关闭编辑、增加弹出框
    closeDialog() {
      this.editFormVisible = false;
    },
  },
};
</script>

<style scoped>
.user-search {
  margin-top: 20px;
}

.userRole {
  width: 100%;
}

.upload-demo {
  display: flex;
  flex-direction: row;
}

.upload-demo img {
  width: 160px;
  height: 140px;
}

.deleUrl {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 99px;
}
</style>